vasilisvg · September 7, 2011 10:50 · hpoom · Sep 13, 2011 · mathiasbynens · Sep 13, 2011
diff --git a/responsive-context-images.html b/responsive-context-images.html
 <!doctype html>
 <!-- 
 WARNING!
 You probably shouldn't use this technique since images never show up
 if the script isn't loaded for one reason or another. Some reasons:
 - The content is viewed using a RSS reader
 - The content is viewed with a read-it-later service
 - The user has a flaky connection (hotel wifi, Dutch train, etc)

 -->
 <meta charset="UTF-8">
 <title>Client side context aware responsive images</title>
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <style>
 .image-container {
 	width: 50%;
 	position: relative;
 }
 .image-container img {
 	display: block;
 	max-width: 100%;
 }
 </style>

 <p>Here's <a href="http://nerd.vasilis.nl/code/responsive-images/noscript.html">a working example</a>.</p>

 <!-- place all sources and real widths of all images in their data-attribute... -->
 <div class="image-container" data-small="img/work-kills-small.jpg" data-medium="img/work-kills-medium.jpg" data-large="img/work-kills-large.jpg" data-small-width="350" data-medium-width="600" data-large-width="900" data-alt="work kills">

 <!-- ...create a noscript fallback for browsers without javascript... -->
 	<noscript>
 		<img src="img/work-kills-small.jpg" alt="work kills">
 	</noscript>
 </div>

 <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js"></script>
 <script>
 // ...do things, and...
 $('.image-container').each(function() {
    var $this = $(this),
        contentWidth = $this.width(),
        theSource =
            contentWidth < $this.data('small-width') ? $this.data('small') :
            contentWidth < $this.data('medium-width') ? $this.data('medium') :
            $this.data('large');
    $this.append('<img src="' + theSource + '" alt="' + $this.data('alt') + '">');
 });
 // ...tadaa!
 </script>